Mac Heavener has been a state or federal prosecutor for over 23 years. Currently, he serves as an Assistant United States Attorney for the Eastern District of Tennessee and practices in the District’s Greeneville office where he devotes most of his time to white-collar investigations and prosecutions. Prior to joining the Eastern District of Tennessee, Mac served as the Chief Assistant State Attorney for the State Attorney’s Office in Jacksonville, Florida from 2016 to 2019, where he supervised approximately 120 state prosecutors and maintained a select homicide case load. While there, Mac was instrumental in creating Jacksonville’s Crime Gun Intelligence Unit as well as the office’s Targeted Prosecution Unit to focus on violent crime. Before that, Mac was a long-term Assistant United States Attorney for the United States Attorney’s Office in the Middle District of Florida in its Jacksonville Division from 2007 to 2016. While there, he served as the Deputy Chief Assistant of that office from 2008 until 2016 and handled primarily white-collar, corruption, civil rights, and human trafficking matters. Before becoming a federal prosecutor, Mac was an Assistant State Attorney and Felony Division Chief for the State Attorney’s Office in Jacksonville from 2000 until 2007. He served in the office’s general felony, sexual assault, and special prosecution divisions. Mac’s prosecutorial experience is broad. He has been trial counsel in many state or federal multi-week trials, including the capital trial of a serial killer, a federal bribery case, a large Ponzi-scheme case, a complex mortgage fraud, multiple federal healthcare fraud cases, and the jury trial of a defendant who tried to shoot and assassinate a sitting United States District Judge. Some of his prosecutions also have been featured on Dateline, 48 Hours, and the Discovery ID channel. Mac was admitted to the Florida Bar in 1991 and began his practice with the firm of Holland & Knight, LLP in Orlando after graduating from law school at the University of South Carolina School of Law in 1991.